Knee guard



FIG. 1 is a right side perspective view of a knee guard showing our new design;

FIG. 2 is an enlarged front, perspective view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a rear elevation view thereof; and,

FIG. 8 is a bottom plan view thereof.

The leg shown in broken lines in FIGS. 1 and 2 is shown for illustrative purposes only and forms no part of the claim design. The broken lines on the knee guard in FIGS. 3, 4 and 6 represent conventional stitching. 

The ornamental design for a knee guard, as shown and described. 